This is a document to help system administrators who need to understand what commands in systemd replace their old workflow in SysVinit. If you want generation information on systemd, refer to systemd

Note that the 'service' and 'chkconfig' commands will continue to work as expected in the systemd world, this guide is how to use the native
systemctl calls that are being made by those commands.

Services

SystemVinit Command

Systemd Command

Notes

ls /etc/rc.d/init.d/

ls /lib/systemd/system/*.service /etc/systemd/system/*.service

Used to list the services that can be started or stopped

chkconfig frobozz

systemctl is-enabled frobozz.service

Used to check whether a service is configured to start or not in the current environment.

chkconfig frobozz --list

ls /etc/systemd/system/*.wants/frobozz.service

Used to list what levels this service is configured on or off

chkconfig frobozz --add

Not needed, no equivalent.

chkconfig frobozz on

systemctl enable frobozz.service

Turn the service on, for start at next boot, or other trigger.

chkconfig frobozz off

systemctl disable frobozz.service

Turn the service off for the next reboot, or any other trigger.

service frobozz start

systemctl start frobozz.service

Used to start a service (not reboot persistent)

service frobozz stop

systemctl stop frobozz.service

Used to stop a service (not reboot persistent)

service frobozz restart

systemctl restart frobozz.service

Used to stop and then start a service

service frobozz reload

systemctl reload frobozz.service

When supported, reloads the config file without interrupting pending operations.

service frobozz condrestart

systemctl condrestart frobozz.service

Restarts if the service is already running.

service frobozz status

systemctl status frobozz.service

Tells whether a service is currently running.

Note that all /sbin/service and /sbin/chkconfig lines listed above continue to work on systemd, and will be translated to native equivalents as necessary. The only exception is chkconfig --list.

Additional commandsIn SysVinit, services can define arbitrary commands. Examples would be service iptables panic, or service httpd graceful. Native systemd services do not have this ability.

Any service that defines an additional command in this way would need to define some other, service-specific, way to accomplish this task when writing a native systemd service definition.

Check the package-specific release notes for any services that may have done this.

Notes

Runlevels/targets

Systemd has a concept of targets which serve a similar purpose as runlevels but act a little different. Each target is named instead of numbered and is intended to serve a specific purpose. Some targets are implemented by inheriting all of the services of another target and adding additional services to it. There are systemd targets that mimic the common SystemVinit runlevels so you can still switch targets using the familiar telinit RUNLEVEL command. The runlevels that are assigned a specific purpose on vanilla Fedora installs; 0, 1, 3, 5, and 6; have a 1:1 mapping with a specific systemd target. Unfortunately, there's no good way to do the same for the user-defined runlevels like 2 and 4. If you make use of those it is suggested that you make a new named systemd target as /etc/systemd/system/$YOURTARGET that takes one of the existing runlevels as a base (you can look at /lib/systemd/system/graphical.target as an example), make a directory /etc/systemd/system/$YOURTARGET.wants, and then symlink the additional services that you want to enable into that directory. (The service unit files that you symlink live in /lib/systemd/system).

SystemVinit Runlevel

Systemd Target

Notes

0

runlevel0.target, poweroff.target

Halt the system.

1, s, single

runlevel1.target, rescue.target

Single user mode.

2, 4

runlevel2.target, runlevel4.target, multi-user.target

User-defined/Site-specific runlevels. By default, identical to 3.

3

runlevel3.target, multi-user.target

Multi-user, non-graphical. Users can usually login via multiple consoles or via the network.

5

runlevel5.target, graphical.target

Multi-user, graphical. Usually has all the services of runlevel 3 plus a graphical login.